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  • EDP Sciences  (3)
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  • EDP Sciences  (3)
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  • 1
    In: E3S Web of Conferences, EDP Sciences, Vol. 350 ( 2022), p. 03005-
    Abstract: This study aimed to evaluate the environmental impacts of the biochar production process through low-temperature pyrolysis of Chinese medicine residue via life cycle assessment (LCA). An LCA model consisting of biomass pretreatment, pyrolysis, separation and cooling was developed. The results indicated that the low-temperature pyrolysis process has the highest environmental impact on AP and GWP. The consumption and direct emission of pyrolysis process were the primary sources of environmental impact. In addition, by comparing to the traditional landfill process of Chinese medicine residue, it turns out that the low-temperature pyrolysis process has improved environmental protection performance.
    Type of Medium: Online Resource
    ISSN: 2267-1242
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2022
    detail.hit.zdb_id: 2755680-3
    Location Call Number Limitation Availability
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  • 2
    In: E3S Web of Conferences, EDP Sciences, Vol. 350 ( 2022), p. 03010-
    Abstract: The thermogravimetric (TG) analysis was adopted to study the pyrolysis characteristics of two typical medical wastes at different heating rates (10, 20, and 50 °C/min), and the kinetic parameters were analyzed by the Coats-Redfern method. Finally, the economic evaluation of the technology was carried out. The results showed that the two typical medical wastes both have only one weight loss peak. The syringes and bamboo sticks pyrolysis ranged from 264.80 to 554.07 °C and from 205.66 to 487.05 °C, respectively. With the increase of the heating rate, the initial, final and peak temperatures of the two raw materials shifted to higher values. The pyrolysis reaction mechanisms of the syringes and bamboo sticks were summarized as the nucleation growth model (A2.5) and the second-order model (F2). The total investment of medical waste pyrolysis project is 59 million yuan, and the annual net gain is 11.85 million yuan. The investment recovery period of the project takes five years.
    Type of Medium: Online Resource
    ISSN: 2267-1242
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2022
    detail.hit.zdb_id: 2755680-3
    Location Call Number Limitation Availability
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  • 3
    In: E3S Web of Conferences, EDP Sciences, Vol. 350 ( 2022), p. 03007-
    Abstract: The industrialization process of China has achieved remarkable economic and social development in recent decades, which companies with excessive production of industrial solid waste (ISW). It took up a large amount of land and led to potential environmental problems such as air, water, soil pollution. With the increasing awareness of environmental protection and the better vision to build a pattern of sustainable economy, the comprehensive utilization of ISW is becoming a challenging and promising research field. In this work, a waste incineration power plant in Guangdong Province, China was selected as the research object. Its novel incineration scheme by mix ISW and MSW was evaluated, which aims to improve power generation efficiency. The comprehensive environmental impact assessment of this refuse incineration-power generation technology was also carried out by life cycle assessment. Results show that for waste incineration power generation system, the numerical order of all normalization indicators is Waste Solids 〉 EP 〉 NOx 〉 ADP 〉 AP 〉 CADP 〉 RI 〉 CADP (fossil fuel) 〉 CO 2 〉 SO 2 〉 GWP 〉 PED 〉 COD 〉 IWU 〉 Water Use 〉 NH 3 -N. It shows that the ash reduction and denigration system are the most worthy of optimization. And the contribution of flue gas purification to ECER index reaches 38.98%, which is the most influential link and significantly ahead of other links, as well as the most needed optimization link.
    Type of Medium: Online Resource
    ISSN: 2267-1242
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2022
    detail.hit.zdb_id: 2755680-3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
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